Sena Maulana, Ika Putri Setiawan, Dyah Pusbanarum, Petar Antov, Apri Heri Iswanto, Lubos Kristak, Seng Hua Lee, Muhammad Adly Rahandi Lubis
This study explored the feasibility of Waste Cooking Oil (WCO)-based Bio-Polyurethane (Bio-PU) as an eco-friendly alternative to petroleum-derived polyols in plywood adhesives. The objective is to evaluate the impact of varied WCO concentrations and methylene diphenyl diisocyanate (MDI) levels on Bio-PU and plywood performance. The Bio-PU's characteristics, rheology, and functional groups are studied. Plywood made from three layers of 100 mm x 100 mm × 2 mm rubberwood (Hevea brasiliensis) veneer is bonded with Bio-PU using a dual spread approach at 180 g.m−2, hot pressed at 120 °C and 1 MPa for 4 min. The laboratory-fabricated plywood is tested for physical, mechanical, and adhesive properties. Results showed that Bio-PU exhibited unique adhesive characteristics, with excellent adhesive strength, despite a slight decrease with higher WCO concentrations. WCO insertion do not compromise delamination resistance. FTIR analysis confirmed successful polyurethane chain synthesis. This research highlighted the potential of WCO-based Bio-PU's as a sustainable, high-performance plywood adhesive. © 2024 The Author(s). Macromolecular Materials and Engineering published by Wiley-VCH GmbH.
Department of Forestry Engineering, Institut Teknologi Sumatera (ITERA), South Lampung, Lampung, 35365, Indonesia; Faculty of Forest Industry, University of Forestry, Sofia, 1797, Bulgaria; Department of Forest Products Technology, Faculty of Forestry, Universitas Sumatera Utara, Padang Bulan, 20355, Indonesia; Faculty of Wood Sciences and Technology, Technical University in Zvolen, Zvolen, 96001, Slovakia; Department of Wood Industry, Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM), Cawangan Pahang Kampus Jengka, Pahang, Bandar Tun Razak, 26400, Malaysia; Research Center for Biomass and Bioproducts, National Research and Innovation Agency, Cibinong, 16911, Indonesia
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